end-Cretaceous mass extinction

GPTKB entity

Predicate	Object
gptkbp:instanceOf	mass extinction event
gptkbp:alsoKnownAs	gptkb:Cretaceous–Paleogene_extinction_event gptkb:Cretaceous–Tertiary_extinction_event gptkb:K–Pg_extinction_event
gptkbp:borders	gptkb:Paleogene_period gptkb:Cretaceous_period
gptkbp:category	Geology Paleontology Earth history
gptkbp:causedBy	gptkb:volcanic_activity_(Deccan_Traps) gptkb:Chicxulub_asteroid_impact climate change sea level changes
gptkbp:causeOfExtinction	gptkb:ammonites pterosaurs non-avian dinosaurs many plant species many bird species many marine invertebrates many marine reptiles
gptkbp:evidence	gptkb:Chicxulub_crater fossil specimen iridium layer
gptkbp:followedBy	gptkb:Paleogene_period
https://www.w3.org/2000/01/rdf-schema#label	end-Cretaceous mass extinction
gptkbp:occurred	approximately 66 million years ago
gptkbp:percentageOfSpeciesLost	about 75%
gptkbp:precededBy	gptkb:Cenomanian–Turonian_extinction_event
gptkbp:relatedTo	gptkb:K–Pg_boundary gptkb:iridium_anomaly gptkb:Chicxulub_impactor gptkb:Deccan_Traps mass extinction fossil extinction patterns
gptkbp:significance	rise of mammals beginning of Cenozoic Era end of Mesozoic Era major evolutionary turnover
gptkbp:studiedBy	geologists paleontologists astrobiologists
gptkbp:bfsParent	gptkb:Maastrichtian_age
gptkbp:bfsLayer	6